UnknownNot Applicable

Epidemiological, Clinical and Etiological Features of SUSAC's Syndrome

France100 participantsStarted 2011-11

Plain-language summary

SUSAC's Syndrome (SS) is characterized by the clinical triad of encephalopathy, hearing loss, and retinal artery branch occlusions. Since the first description of SS in 1979, hundreds of patients with SS, mostly young women, have been reported. However, comprehensive epidemiological, clinical and etiological features of SS have never been specifically addressed so far. The objective of this study is to characterize the epidemiological, clinical, and etiological features of SUSAC's Syndrome. In this aim, the investigators will constitute a national clinical-based cohort including all SS cases retrospectively reported in France since the last 20 years and all new cases prospectively observed. French Society of Neurology, Ophthalmology and Internal Medicine will be asked to collaborate. Every case will be reviewed by an expert comity of internists, neurologists and neuroradiologists to validate the diagnosis. The exhaustive and systematic analysis of each case will help to better define different aspects of the disease such as the incidence and prevalence, the clinical presentation, the diagnostic modalities and the impact of treatments. Diffusion tensor magnetic resonance imaging of the brain will be obtained to more carefully study the cerebral microvasculopathy of the disease. Serum, cerebrospinal fluid, and DNA samples from each patient will also be collected to study potential autoimmune, thrombotic and infectious markers.

Who can participate

Age range

18 Years

Sex

ALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

INCLUSION CRITERIA: * Age older than 18 * Two clinical features of the triad present: encephalopathy, sensorineural hearing loss assessed by audiogram, retinal artery occlusion assessed by fundoscopy or fluorescein retinal angiography. * Written informed consent provided. In case of subjects unable to give a written informed consent because of encephalopathy associated with the disease, a written statement of non-opposition should be signed by a relative. This non-opposition statement should be then confirmed by the subject as soon as possible. * Realization of a medical examination beforehand EXCLUSION CRITERIA: * Alternative diagnosis: multiple sclerosis, mitochondriopathy, Cerebral Autosomal Dominant Arteriopathy with Subcortical Infarcts and Leukoencephalopathy (CADASIL), primary brain tumor, Lyme disease. * In case of associated disease (autoimmune disease, tumor, metabolical disease,…), inclusion will need further analysis by the expert comity. * Not membership in a national insurance scheme

Questions worth asking your doctor

Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.

1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?

Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.

Questions for the trial coordinator

The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.

1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?

A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.

What they're measuring

To characterize the epidemiological, clinical, and etiological of SUSAC's Syndrome

Timeframe: 1 year

Trial details

NCT IDNCT01481662

SponsorAssistance Publique - Hôpitaux de Paris

Sponsor typeOTHER

Study typeOBSERVATIONAL

Primary completion2020-05

Contact for this trial

Thomas PAPO, Pr

(1)40258705 thomas.papo@bch.aphp.fr

View on ClinicalTrials.gov More SUSAC's Syndrome trials